TODAY JUN24
TEMPERATURE59
HUMIDITY78
PRESSURE30.08
WIND COND.
  • 8465
  • 7549Mon
  • 7451Tue
  • 7451Wed
  • 7151Thu20%
daynightWeather update from Lewiston, Lewiston-Nez Perce County Airport at

Pomeroy Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January3°F60°F36°F0.8"
February6°F64°F39°F0.5"
March16°F73°F45°F1.2"
April26°F82°F51°F1.4"
May34°F97°F61°F1.5"
June43°F105°F67°F1.0"
July50°F109°F78°F0.2"
August46°F108°F75°F0.3"
September37°F97°F65°F0.4"
October17°F88°F51°F0.9"
November15°F68°F42°F1.2"
December1°F63°F33°F1.1"

Did you know?

  • The highest monthly average temperature in Pomeroy for July is 78 degrees.
  • The lowest monthly average temperature in Pomeroy for December is 33 degrees.
  • The most monthly precipitation in Pomeroy occurs in May with 1.5 inches.
  • The air quality index in Pomeroy is 53% better than the national average.
  • The pollution index in Pomeroy is 75% better than the national average.

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Compare Pomeroy, WA Weather To Other Cities

Pomeroy air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexPomeroyWashingtonNational
Air quality index233650
Pollution index1,232,2008,596,9895,066,862

Pomeroy air quality information

MeasurementTotal
Days measured365
Days with good air quality334
Days with moderate air quality31
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Pomeroy air quality information

PollutantTotal
Arsenic0.000%
Benzene0.020%
Carbon Tetrachloride0.002%
Lead0.020%
Mercury0.000%

Average monthly Pomeroy temperature with heat index

Pomeroy monthly precipitation with daily maximum

Pomeroy monthly snow depth with daily maximum

Pomeroy monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Pomeroy, WA1,2812354%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Pleasant Hill, OH1,281484%
Dalton, PA1,2814020%
Union Hall, VA1,2813628%
Gerber, CA1,2813824%
Bolinas, CA1,281536%
Pomeroy, WA1,2812354%
Source: The Pomeroy, WA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.